Telemetering system



March 10, 1942. o. MINER TELEMETERING SYSTEM 3 Sheets-Sheet l I Filed July 27, 1940 INVENTOR ATTORNEY March 10, 1942, O MlNER 2,275,638

TELEMETERING SYSTEM Filed July 27, 1940 5 Sheets-Sheet 2 w w w M k i- K F TM 3 m R a w a m W. H w n. m E 2, g T a J, g w my W. My

INVENTOR IRVING 0- MINER ATTORNEY March 10, 1942. o MINER TEJLEMETERING SYSTEM Filed July 27, 1940 INVENTOR BYW -UwQLQ M ATTORNEY Patented Mar. 10, 1942 TELEMETERING SYSTEM 1 Irving 0. Miner, East Providence, R. I., assignor to Builders Iron Foundry,

Providence, R. L, a

corporation of Rhodelsland Application July 27, 1940, Serial No. 347,850

22 Claims.

This invention relates to telemetering systems wherein cyclical electrical impulses are produced for transmissionto remote points. An object of the invention is to provide a. novel telemetric system capable of controlling a variable quantity in a unique and especially effective manner. The invention enables the control to be accomplished with precision and over a wide range for any given value of the master or controlling quantity. v

A more specific object of the invention is to telemeter electrical impulses of a function of time corresponding to a 'master quantity (such as the rate of flow of a master or primary fluid) and through said impulses to control a dependent quantity (such as the rate of delivery of another fluid or substance into the primary fluid) in predetermined proportion to said master quantity.

The invention provides in this connection for the transmission of supplemental time-function electrical impulses under the control of the firstmentioned impulses, but widely variable in their relation to said first mentioned impulses, .for enabling variation over a wide range in the rates of delivery, for example, of a second fluid or substance for any given flow rate of the primary connected by wires 5', 6'. Cooperating with -said I cam 3 is a contactor I positioned by a float 8 in fluid, and for maintaining thedesir'ed proportion despite variations in the rate of flow of said primary fluid.

Other features and advantages of the invention will be hereinafter described and claimed.

In the accompanying drawings:

Fig. 1 is a diagrammatic view illustrating an embodiment of the invention applied to the maintaining of the rate of delivery of one fluid in desired proportion to the rate of flow of a master or primary fluid.

Figures 2-7, inclusive, are diagrammatic views illustrating the circuits and positions of the parts in a given example of operating conditions.

Fig.8 is a diagrammatic plan view showing an embodiment of a proportioning control mechanism constituting a part of my invention.

Fig. 9 is a view of a detail.

Figure 10 is a view of a further detail. I

Referring to the drawings, an embodiment of theinvention is illustrated as applied to the production of a flow of fluid in one conduit l in proportion to the flow of fluid in another conduit 2.

Associated with the conduit 2 is a telemetric transmitter of well-known type comprising a cam 3 driven continuously at constant speed by a synchronous motor 4, energized-from the ouraccordance with the difierential pressure between taps 9 and I0 connected to conduit 2. Said contactor I is adapted to make contact with the face of the cam 3, during the rotation of the latter, for periods commensurate with the flow,

rate of the liquid in the conduit 2. In the example shown, the liquid flows in the direction of the arrow in conduit 2 and the difi'erential producer takes the form of alVenturi tube portion 25in said conduit. The high pressure tap I0 is connected to leg I I of a conventional U-tube containing a manometric liquid such as mercury,

while the low pressure tap 9 is connectedto leg 1 l2 of said U-tube. Float 8 rests upon the surface of a manometric liquid and is thus positioned in accordance with the diiferential pressure between points 3 'and H), or, in other words, in

correspondence with the square of the rate of flow of the liquid in the conduit 2. Due to the shape of cam 3, the period of engagement between the face of' said cam and the contactor l in each cycle of rotation of said cam is proportional to the square root of the differential pres- I sure between points 9 and I0, and is thus proportional to the rate of flow of the liquid in the conduit 2.

The cam 3 is shown connected to the current main 5 by wires 5', I3 and brush'l4.. Contactor I is connected tothe main 6 through wire l5, relay [6, and wires l1 and I8; Thus in each cycle of rotation of said cam 3, an electrical impulse, of a duration proportional to the rate of flow of the fluid in the conduit 2 is sent over the wire l5, and the relay I 6 is energized forthe duration of said impulse. Said relay I5 is one of a group of relays R which act to eliminate every other impulse from the transmitter cam 3 and contactor .I, so that only alternate impulses are passed on to the proportioning controller P for utilization as described hereinafter.

More specifically, the relay l6, when energized, attracts its armature l9 into engagement with contacts 20, 2|, thereby closinga circuit through a second relay 22, by way of wire 23, said armature' andcontacts, and wires l1 and Ill. The alternate make-break relay 22 is of a well-known type having aratchet device associated therewith for maintaining its armature 22' engaged with whereupon said armature is rent mains 5, 6, to which said motor is shown 6| said contacts -and remains disengaged therefrom until relay I6 is next energized. In other words, on the first energlzation of relay IS, the anus.-

disengaged from ture 22' of relay 22 is engaged with contacts 24, 25 and remains engaged therewith for the period of a complete rotation of the cam 3, following which said armature is disengaged from said contacts throughout the next cycle of rotation of said cam. In this way, said contacts 24, 25 are closed by said armature in alternate cycles of rotation of said cam but are open in intermediate cycles, so'that only alternate impulses from said cam are passed beyond the relay 22, Since relays of the type described with reference to relay 22 are well-known in the art, further description thereof is unnecessary.

As long as the armature 22 is engaged with contacts 24 and 25, and relay I6 is energized, a circuit is closed through wire 23, contact 20, armature l9, contact 2|, contact 24, armature 22, contact 25, relay 26, and thence through wires l1 and |8. Relay 26 is thus energized in each alternate cycle of rotation of cam 3 for the duration of the impulse in such alternate cycle.

Relay 26, when energized, attracts its armature 21 into engagement with contacts 28 and 29,

thereby closing a circuit through a solenoid 30 of the proportional control apparatus P. Such circuit'comprises a wire 3|, wire 32, solenoid 30, wire 33, contact 28, armature 21, contact 29, and wire l8. In short, the solenoid 30 is energized for the duration of the impulse in each alternate cycle of rotation of the cam 3.

The proportioning control device P includes a motor 34', such as a synchronous motor which is driven continuously at substantially constant speed by current supplied from the mains 5, 6, by way of wires 3| and 35. Said motor, through gear 36 (Fig. 8), drives a pair of gears 31, 38. Gear 31 is rotatable on a shaft 39, also has a disk rotatably mounted thereon.

' Integral with'or secured to the gear 31 is a clutch portion 31, while a similar clutch portion 40 rotates with the disk 40. Rotatably mounted on said shaft 39, and also slidable thereon, is a clutch device comprising a hub 4|, a clutch element 42 adapted to engage the clutch portion 31' of gear 31, a pinion 43, and a clutch element 44 adapted to engage the clutch portion 40' of disk 40. Said hub, pinion, and clutch elements are integral or secured together so as to move as a unit. For shifting said clutch device along the rod or shaft 39, to engage the clutch portion of either the gear 31 or the disk 4|], the armature 30 of the solenoid 3|] is provided withan extension 45 suitably bifurcated for engagement with a groove in the hub 4|. When said solenoid is energized, the clutch element 42 is engaged with the clutch portion 31' of gear 31, while element 44 is out of engagement with clutch portion 40' of disk 46. On the other hand, when solenoid 30 is de-energized, a spring 46 actuates the armature 30' to shiftthegclutc'h device into the position shown in Fig. 8, wherein element 42 is disengaged from .gear'portion 31' and element 44 is engaged with the disk portion 40'.

The disk 40 is rotated continuously mo direction opposite to that of gear 31. For this purpose the gear 38 is secured to a shaft 41,which also has secured thereto a gear 46. Through gears 49, 53, 5|, the gears 38 and 48 drive a disk 52 carried by a shaft 53'. Between disk 52 and the aforementioned disk 40 and frictionally engaging said disks,-is a roller 54, rotatably mounted on a rod 55 which is slidably adjustable in suitable bearings and carries a pointer 56 cooperating with a suitable scale 51. The disk 52 is which shaft,

the shaft 53.

resiliently maintained in firm engagement with roller 54, and the latter in turn is pressed firmly against the disk 40, by a spring 58 interposed between a stationary frame piece and a collar on The speed of rotation of the disk 4|] may be varied as desired by shifting the rod 55 to bring the roller 54 to different positions between the disks 46 and 52. In Fig. 8, the roller 54 is so positioned that the speed of disk 40 is equal to that of disk 52. veniently graduated to indicate speeds of disk 4b as percentages of the speed of disk 52, the pointei 56 indicating on said scale when saio speeds are equal. The rod- 55 may be adjusted manually to obtain the desired speed of disk 40 and the scale 51 may be graduated in any appropriate manner so that the speed of said disk may be exhibited thereon within the desired range.

Meshing at all times with the-clutch pinion 43 is a gear 59 which in turn meshes with a gear 60.

.may be advantageously accomplished through the medium of a compression spring 63 arranged to press the hub of arm 62 into frictional engagement with collar 6|. Said arm 62 carries a screw 64 or other adjustable projection which is adapted to control a suitable switch 65. The latter may comprise a contact bar 66 (Fig. 1), urged by a spring 61 into engagement with a pair of contacts 66, 69, said bar having a projection 10 engageable by the projection 64 of the switch arm 62.

Energization of solenoid 30 clutches the gear 60 to the gear 31 with resultant movement of arm 62 away from an initial position wherein said arm engages the projection 10 and maintains contact bar 66 a slight distance out of engagement with contacts 68, 69. As said arm commences to move away from said position, spring 61 promptly brings said bar 66 into engagement with said contacts, in which position said bar remains until again moved out of engagement with said contacts by the return of the arm 62 to its initial position. Saidarm 62 continues to move away from said initial position between the start of the movement of said arm 62 away from its initial position and its return thereto, the switch bar 66 bridges the contacts 68 and 69; This period equals the duration of the impulse which causes energization of the solenoid 33 and a subsequent interval which bears a predetermined relation to said impulse duration, depending upon the setting of the' roller 54.

Movement of bar 66 away from contacts 68, 69

suitable stops movement of the arm 62. by the disk 40. Slip page then occurs between switch arm 62 and collar 6| until solenoid 36 is again energized.

In circuit with said contacts 68, 69, and with back contacts 1|, 12 of the relay 26, is a relay 13 which governs the sending to a control device of signals of predetermined duration with respect to those sent from the transmittercam 3 and contactor 1. Itwill be noted that said relay 13 is not The scale 51 may, as shown, be conislimited by the engagement of said bar with 68, 63', which also prevent further aamese v during that period; but said relay 13 is energized throughout the ensuing return movement of arm 62, until said arm moves the switch bar 66 out of engagement with its associated contacts 66, 69. This period of energization of said relay 13 depends upon the speed of the retum'movement of said arm 62, as determined by the setting of the roller 64. ,r

The circuit through relay 13 may be traced as follows: from wire 3!, through wire 32, wire 14, contact 69, switch bar 66, contact 68, wire 15, relay 13, wire-16, contact 1|, armature 21, contact 12,and wire' I8.

When relay 13 is de-energized, its armature 11 bridges a pair of backcontacts 18, 19, thereby closing a circuit from wire 86, through said contacts and armature, thence through winding 8| of a reversible motor 82, and then through wire 83. Motor 82 thereupon turns in a given direction. When, however, relay 13 is energized, its armature bridges a pair of front contacts 84, 85, and-closes a circuit through an opposed winding 86 of motor82, causing said motor to turn in the Opposite direction.

l Said motor 82 drives a switch arm 81 which controls a switch 68 in the same manner as arm 1 62 controls the switch 65. Said switch 68 comprises a contact bar 89 which is urged by a spring 90 into engagement with a pair of contacts 9|, 92. Said arm 81 maybe driven by motor 82 in any convenient way through a suitable friction 1 means 93. For example, as will be readily'apparent, friction means 93 may be interposed between the shaft of motor 82 and a gear or other. driving member for arm 81. Of course, if desired, the same spring pressed friction means may be interposed between arm 81 and its driving member that is shown interposed between arm 62 and gear 69, as shown in Figure 10.

In its initial position, the switch arm 81, as

shown in Fig. 1, maintains the bar 89 slightly out'of engagement with contacts 9|, 92 and against suitable stops 9|, 92. As soon, however, as relay 13 is energized, a circuit is closed through winding 86 of motor 82 and the latter drives the arm 91 away from bar 89,the'latter immediately bridging thecontacts 9|, 92 at the beginning of said movement of said arm 81. Said movement of arm 81 continues as long as the relay13 is energized, or, in other words, for the duration of the return movement of switch arm 62 into engagement with-bar .66. As swn as said return movement of arm 62 is completed, the circuit through relay 13 is broken at contacts 68, 69, and armature 11 of relay 13 engages the back contacts 18, 19, energizing the winding 8| the duration of the aforementioned return movement of arm 62.-

The impulses in the circuit including wires 95 and 96 may effect any desired control. In the present embodiment they are illustrated as controlling the fiow of fluid through a p pe line 'i into the conduit 2. For this purposesaid im pulses may, as shown, be applied to the energization of an electromagnet clutch 91, interposed between a continuously running constant speed motor 98 and a pump H12 in the pipe line I. Said motor rotates continuously a clutch element 99, with which element'the electromagnetic clutch member 91 is engaged for the duration of the impulse in the wires 95 and 96. Said clutch member 91 is splined on the pump operating shaft I06, and is slidable longitudinally thereon; so that pump I92 is operated for the duration of 'each impulse in said wires 95, 96. Spring 16! disengages the clutch member 91 from element '99 as soon as the impulse ceases.

'since the time of such return of said arm 62 may be varied by changing the position of the roller 54, it will be apparent that the duration of said impulses may be widely varied with respect to the durations of the impulses from the transmitter cam 3. Thus, if roller 54 is inthe position shown in Fig. 8 wherein the periods of return of switch arm 62 to its initial position are 100% of the durations of the impulses from transmitter cam 3, the durations of the impulses in wires 95, 96 are twice those of the signals from said transmitter cam. Thereby the pump 192 may be operatedfin the period of eachgof said impulses in wires 95, 96, through agiven extent at half the speed required if said impulses were a half as long. In other words, the pump may be operated at normal speed through the same ex-' tent as would be obtained by doubling its speed for half the duration of said impulses. In this way "increase of speed of the pump may be avoided. If desired, the roller 54 may be shifted still further to the left in Fig. 8, thereby additionally increasing the periods of the impulses in the wires9'5, 96. 8

of motor 82 and causing said motor to return the arm 81 into the position shown in Fig. 1, wherein the bar 89 is disengaged from contacts 9|, 92 and is moved against its stops 9|, 92'. Slippage then occurs through the friction means between motor 92 and arm 91 until relay 13 is again energized.

The duration and extent of the return movement of the arm 81 are the same as the duration and extent of its movement away from its initial positionj and since the duration of said movement away from said initial position equals the' duration of the retum movement of switch arm 62, it will be seen that the bar 89 remains engaged with contacts 9|, 92 for a period equal to twice the duration of said return movement It will further be observed that the ratio of e the rate of flow of the liquid in pipe I- to that in conduit 2 may be varied through an extremely wide range by adjustment of the roller 5,4. For example, if the roller is shifted to a position cor.- responding to the point marked 59 on the scale 51, the period of the return of arm 62 to its ini' tial position will be 50% of the duration of. the impulse from the transmitter cam, and the duration of the impulse in wires 95, 96 will be equal to that of said transmitter cam signal. Pump I62 will then be operated through half the extent that it is operated when pointer .56 stands at M6 on scale 51. Movement of pointer 56 further to the right in Fig. 8 will further diminish the Y of the switch arm '62. Throughout this periodof engagement between bar 89 and said contactsceases.

in cooperation with contactor 1.

again energized, but the armature 22' of relay in conduit 2 by appropriately shifting said rod 55.

In short, the above-described embodiment provides signals in wires 95, 96 to control the feeding of a supplementary substance (in pipe I), first in proportion to the rate of flow of a primary substance (in conduit 2), and second at variable proportions (as determined by the setting 01 roller 54). By manipulating the adjustment of said roller-5l it is possible to change the rate of feed of the-supplementary substance over a very considerable range even for the same rate of flow of the primary substance, and the proportion thus set by .the position of said roller will be maintained as the flow rate of the primary substance changes.

Fig. 1 shows the condition of the circuits at the commencement of an impulse from cam 3 in the first transmitting'cycle. All of the relays I 6, 22, and 26 are energized, and switch arm 62 has just moved away fromprojection 16, resulting in engagement of contact bar 66 with contacts' 66 and 69. However, relay 13 is de-energized,:since armature 21 of relay 26 is disengaged from contacts 1|, 12. Switch arm 81 holds contact bar 89 out of engagement with contacts Assuming, by way of illustration, that the cycle of rotation of cam 3 is 60 seconds, that the duration of the maximum impulse from said cam is 53 seconds, that contactor 1 is set to provide such maximum impulse, and that roller 54 is set at a point corresponding tothe 100% designation on scale 51, the sequence of further operations is illustrated in Figures 2-7.

Figure 2 shows the condition of the circuits at the time when the cam 3 has continued its rotation from its position in Figure 1 to a position in which the'impulse (53 seconds) from said cam It will be noted that relays I6, 22 and 26 are now de-energized' (relay armature '22 being, however, held closed for the completion of the 60 seconds of the cycle by a ratchet device, as hereinbefore explained). Solenoid 36 of the proportioning control apparatus is now de-energized, due to the de-energization of relay 26, and arm 62 now commences its return move-- .ment towards its initial position. The engagement of armature 21 with contacts H, 12 pursu-- ant to de-energization of relay 26, has closed a- I circuit through relay 13, whereupon motor 82.

commences moving switch arm 81 away from its initial position, so that contact bar 89 engages contacts 9|, 92 and the impulse circuit is closed over wires 95, 96.

In Fig. 3 the cam 3 is shown commencing its second cycle of rotation, initiating a new impulse Relay I6 is solenoid 30.

v 69, and relay 13 is de-energized. Switch arm 81 has now moved away from its initial position for 53 seconds and motor 82 starts returning said switch arm towards its initial position; but contact bar- 69 remains engaged with contacts 9|,92, and the impulse in wires 95, 96 continues.

In Fig. 5, the cam 3 is at the point in the sec- 0nd cycle wherein the 53 second impulse in that I cycle ceases. Relay I6 is de-energi'zed, 'andrelays 22, 26, solenoid 30, and relay 13 remain deenergized. Switch arm 81, which commenced its return movement at the end of 46 seconds in said second cycle, continues said return move- .ment. The impulse continues in wires 95, 96.

Fig. 6 shows the circuits at the beginning of the third cycle of rotation of cam 3. A third impulse is initiated in this position of said cam, and relays I6, 22, and 26 are energized, as is also Switch arm 62 now again starts moving away from its initial position, and bar 66 again engages contacts 68 and 69. However,

relay 13 remains de-energized since armature 21 of relay 26 is out of engagement with contacts 1|, 12. Switch arm 81 continues its return movement and the impulse continues in wires 95, 96.

Fig. 7 shows the conditions at thejend of 39 seconds in the third cycle, at which time switch arm 81 returnsto its initial position and disengages bar 89 from contacts 9| and 92; terminating the impulse in the wires 95, 96. Said impulse, which started at the end of 53 seconds in the first cycle and terminated at the end of 39 seconds in the third cycle, has continued for 106 seconds, or double the impulse of 53 seconds from the cam 3 in the first cycle. w Assuming the impulse from the cam 3 in said third cycle to have a duration of 53 seconds, the condition of the circuits at the end of said 53 seconds' will be the same as shown in Figure 2, and the sequences of operations will be as above indicated.

From the foregoing specific illustration of operations of the embodiment of the invention disclosed, its operation undervarious conditions will be apparent. e The terms and expressions which I have em ployed. are used as terms of description and not of limitation, and I have no intention, in the use of such terms and expressions, of excluding any equivalents of the'features shown-and described 22 'is now in its lower position, out of engagement energized, and switch arm 81 continues moving away from its initial position. Contact bar 69 remains engaged with contacts 9|, 92, and the impulse continues in wires 95, 96.

Fig. 4 shows the circuit conditions at the end of 46 seconds in said second cycle. At this time or portions thereof, but recognize that various modifications are possible within the scope of the invention claimed.

I claim: I m y 1. In a telemetering system, means for cyclically creating impulses of durations corresponding with values of a quantity, and means responsive to said impulses for transmitting other impulses the durations of which differ in predetermined proportion from those of the'first mentioned impulses.

2. Ina telemetering system, means for ,cyclically creating impulses of durations corresponding with values of a quantity, and means responsive to said impulses for transmitting other impulses the durations of which are greater than those of the first mentioned impulses. r

3. In a telemetering system, means for cycli cally creating impulses of durations correspondtransmitting other impulses of durations bearing a predetermined relation to those or the first mentioned impulses, and means for varying said relation.

5. In a telemetering system, means for cyclical-- 1y creating impulses of durations correspond ng with values of a quantity, means responsive to said impulses for transmitting other impulses the durations of which bear a predetermined relation to those of the first mentioned impulses and means for varying said relation.

6. In a telemetering system, means for creating, in cycles of uniform time periods, impulses of durations corresponding with the values of a quantity, switch means, means responsive to certain of said impulses for operating said switch means in cycles, the periods of which are multiples of those of the first mentioned cycles, and means controlled by said switch means for cyclically transmitting other impulses;

7. In a telemetering system, means for cyclically creating impulses of durations corresponding with values of a quantity, switch means,

means responsive to alternate ones of said impulses for operating said switch means in cycles the periods of which are double the periods of the first mentioned cycles, and means controlled by said switch means for transmitting other impulses.

8. In a telemetering system, means for cyclically creating impulses of durations corresponding with values of aquantity, substantially constant speed motor means, a movable member, means responsive to certain of said impulses for causing said motor means to operate said member in a .given direction away from a-normal position for the duration of theimpulse andthereafter: to return said-element to said position, a second member, means controlled by. the first member for causing movement of the second member away from a normal position during the return of the first member to its normal position ing with values are quantity, signal-controlling thereafter to return said element to said posiing with values of a quantity, substantially constant speed motor means, a movable member, means responsive to-certain of said impulses for causing said motor means to operate said member in a given direction away from a normal position for the duration of the impulse and tion, other motor means, means controlled by said member for causing operation of said other motor means in one direction during said return of said member and in the opposite direction for a period equal to that of ,said return, and impulse transmitting means controlled by said other motor means. Y

11. Ina telemetering system, means for cyclically creating impulses of durations corresponding with values of a quantity, substantially constant speed motor means, a movable member,

clutch means between said motor means and said member, means responsiveto certain of said im pulses for operating said clutch means to a position in which said motor means drives said a member in the opposite member in a given direction and for operating said clutch-means on cessation of the impulse to a position wherein said motor drives said transmitting means controlled by said member.

12. In a telemetering system, means for cycli cally creating impulses of durationscorresponding with values of a quantity, substantially constant speed motor means, a clutch means between said motor means and said member, means responsive to certain of said impulses fo'roperating said clutch means to a position in which said motor means drives said member in a given direction and for operating said clutch means on cessation of the impulse to a position wherein said motor drives said member in the opposite direction, other impulse creating-means, operation of the last-mentioned impulse creating means for the period of the movement of i said member in said opposite direction and for direction, and impulse movable member,

and means for causing an additional period of substantially the same duration. V 13. In a telemetering system, means for cyclically creating impulses of durations corresponding with values of a quantity, substantially constant speed motor means, a movable member, clutch means between said motor means and said member, means responsive to certain of said impulses for operating said clutch means to a position in which said motor means drives said member in'a given direction and for operating toits normal position, and means controlled by said second member forv transmitting an impulse during both the movement of said second member away from its normal position and its return thereto.

9. In a telemetering system, means for cyclically creating impulses-of durations corresponding with values of a quantity, substantially constant speed motor means, a movable member, means responsive to certain of said impulses for causing said motor means .to operate said member in a given direction away from a normal position for the duration of the impulse and thereafter to retum said element to said position, and means controlled by said member for transmitting an impulse for the period determined by the return movement of said member.

10. In a telemetering system, means for cyclisaid clutch means .on cessation of the impulse to a' position wherein said motor drives said member in the opposite direction, reversible motor means, means for causing said reversible motor means to operate in one direction during the period of the movement of said member in said opposite direction, and for causing said reversible motor means to then operate for a like 7 period in the opposite direction, and means controlled by saidmotor for sending an impulse during the'movement of said motor in bothor said directions. p

14. In a telemetering system, means for cyclically creating impulses of durations corresponding to values of a quantity, a circuitwontrolling member, a relay energized by alternate ones of said impulses, consta nt speed motor means, clutch means between said motor means and said member, connectionsbetween said relay and said clutch means for shifting said clutch means to cause said motor means to operate said member in a given direction during the period of energization of said relay, means responsive to deener-gization of said relay for shifting said clutch means to cause said motor to operate said member in the opposite direction, a relay in the circuit controlled by said member, means responsive to deenergization of the first relay for energizing the second relay for the period of the movement of said second member in said opposite direction, and impulse-creating means controlled 10 by said second relay. 1

15. In a telemetering system, means for cyclically creating impulses of durations corresponding to values of a quantity, a circuit controlling member, a relay energized by alternate l5 clically creating impulses corresponding to values ones of said impulses, constant speed motor means, clutch means between said motor means and said member, connections betweensaid relay 5 and said clutch means for shifting said clutch means to cause said motor means to operate said member in a given direction during the period of energization of said relay, means responsive to deenergization of said, relay for shifting said clutch means to cause said motor to operate' said member in the opposite direction, a relay in the circuit controlled by said member, means re-. sponsive to deenergization'of the firstrelay ior energizing the second relay for the period of the movement of said second member in said opposite direction, reversible motor means, means controlled by said second relay for causing said motor means to operate in one direction, when said relay is energized "and for causing said reversible motor means to operate in theopposite directionwhen said relay is deenergized, and means controlled by said reversible motor means for sending an impulse'during operation of said motor means in both directions.

16. In a telemetering'system, means for cyclically creating impulses of durations corre- 4D spending with values of a quantity, substantially constant speed'motor means, a movable member, clutch means between said motor means and said member, means responsive to certain of said impulses for operating said clutch means to a position in which said motor means drives said member in a given direction and for operating said clutchmeans on cessation of the impulse to a position wherein said motor drives said member in the opposite direction, means for varying the speed of operation of said member in said opposite direction, and impulse transmitting means controlled by said member.

' 17. In a telemetering system, means for I cyclically creating impulsescorresponding to values of a quantity, substantially constant speed motor means, a movable member, means responsive to ,an impulse for causing said motor means to drive said ,memberin a given direction for a period proportional to the quantity value repre- (30 ple of the period of the return movementof said member.

18. In a telemetering system, means tor cyclically creating impulses corresponding to values of a quantity, substantially constant speed motor means, a movable member, means responsive to an impulse for causing said motor means to drive said member in a given direction for a period proportional to the quantity value represented by said impulse and for then causing said motor means to return said member to a given position, means controlled by said member for sending an impulse corresponding to a multiple of the period of the return movement of said member, and means for varying the speed of said return movement.

- 19. In a telemetering system, means for cyof a quantity, substantially constant speed motor means, a movable member, clutch means between said member and said motor means, a relay responsive to certain of said impulses for controlling said clutch means to cause said motor means to operate said member in one direction for a period corresponding to the quantity value represented by the impulse and to thereafter return said member to a given position, means for preventing the impulses in alternate cycles from affecting said relay, and impulse transmitting means controlled by said member.

20. In a telemetric control system, means for cyclically creating impulses corresponding to values of a quantity, means controlled by altercontrolled by each of a plurality of said impulses .for moving said member in one direction for a period corresponding to the quantity value represented by the impulse and for then returning said member to a given position, means controlled by said memberiior producing other impulses during a period whichisa multiple of the period of return of said member to said position, and means governed by said other impulses for controlling a quantity.

22. In a telemetric proportioning system, means responsive to the rate of delivery of a substance for cyclically creating impulses corresponding to said rate of delivery, a movable member, means responsive toeach of aplurality or said impulses for moving said member in one direction for a period corresponding to the quantity value and for then returning said member to a given position, means for preventing alternate ones of said impulses from affecting said moving means, means controlled by the return movement of said member for producing other impulses, means for varying the speed of return oi said member, and means governed by said other impulses for controllingthe rate of delivery or another substance.

IRVING o. NHNER. 

